Railway car-truck.



PATBNTED AUG. II, 1908. H, S.'HART.

N N. I n@ RAILWAY GAR TRUCK.

APPLICATION FILED 1356.17, 190e.

" Uivrrin) srrvrns .naar onirica I HARRY S. IIAIitT, OF CHICAGO, ILLINOIS, ASSIGNOR 'I`O WOLFF TRUCK FRAME COMPANY, OF

CHICAGO, ILLINOIS, A CORIOR :.TION OF MAINE.

sired. 'Ihe upper member RAILWAY CAR-TRUCK.

Specification of Letters Patent.

To all whom it may Be it known that concern: I, HARRY S. HART, a citizen of the United States, residing at Chicago,

in the county of Cook and State ol Illinois, haveinvented certain new and useful Improvements in Railway-Car Trucks, of which the following is a speciiication.

My invention relates to railway car trucks; and has for its object to provide an improved truck in which provision is made for the ready and quick removal of the bolster.

With this and other objects in view which will hereinafter appear, my invention consists in the combinations and details set forth and claimed. l

In the accompanying drawings-Figure 1 is a side elevation of a portion of a railway truck containing my improvements. Fig. 2

- is a top plan view of a part of the upper meni- VAber or arch bar of the truck. Fig. 3 is a side elevation of the parts shown in Fig. 2 partly in section. Fig. 4 is a sectional plan view on the line 4 of Fig'. 3. Fig. 5 is a transverse section on the line 5 ol Fig. 4;

In the drawings, I have shown, my invention as applied to a cast metal side traine in which the upper and lower members or arch bars and the column guides are made or cast in an integral piece. The journal boxes may also be cast integralor made separate as dcof the side frame is rovided Wit a removable section over the bollster, whereby when this section is removed lthe bolster may readily be removed from the truck. Side `frames ol' this kind aie well-known in the art and have proven highly eflicient and satisfactory in service. It has been found difficult, however, to construct these east metal side frames in such manner that the removable section will always fit in place, en account of the inequalities which are resent in castings oli' this sort. For economica reasons, no machine work is permissible in making these devices, consequently, it often happens that in castings inequalities appear w iich make it necessary to drive the removable section into position with considerable force. This results in placing an initial tension upon the tension members, which is undesirable. By my invention I provide means whereby the removable section is made of less length than is ordinarily the case and I providea means for adjustably securing this section in position,

` whereby and quickly place these sec instable securing device.

member or arch bar ol' a Il tli to the upper member;

to th to the journal boxes c the column guides ordinary manner.

upper member. ln the shown this removable at e?, being reduced at its Thus, it will be seen in engagement, the

the opposite end ol the so that in c the io'ini ol the casting, c

tion may still be placed in without unduly straining of the truss. into position it may be beveled end portions ot' the removable section is prevented. i p osite end the removable section is prov into operative position, as desired.

It will be understood that the section is ol slightly less length than the distance between the ends of the upper member, Ae there are slight inequalities in ithei' on the upper member or on the removable section, the secl operative position the parts, so as to produce undesirable tension on the members When the wedge uf is placed driven in until the Patented Aug. 11, 1908.

any inequalities in the casting are compensated lor, and it is possible to readily tions iii position and lock them in operative position by an ad '.ln the drawings c represents the upper cast metal side frame of the well-known type; I) the lower member havingmchned portions c connected c tie bar secured e lower member;

j. g a bolster having its ends held between the column guides, and h the spring supporting the bolster-all iii the The upper member or arch bai' forming the truss is provided ovci the bolster,

this member being provided for the purpose ol enabling the removal ol" the the removable section is detached from the drawings I have section at one end, as

bolster when ends lormiiig a tongue having a beveled end of and similarly beveled shoulders o engaging thc ends of a recess in the 'upper member, the ends of the recess being correspondiiigly beveled. that when these ends are vertical movement ot the rit its opided with a similar tongue (1, entering a .recess 11i upper member. the end ai the removable section is provided with a transverse recess, the adj acent end. ol

the upper member being provided witha similar transverse recess, andV a wedge e is the wedge portion at one end for the reit may be drawn removable removable niember and the upper member of 'the truss are in engagement and the nut being tightened, tbe parts are securely held 1n place. The operation will be understood Without further demember over the bolster, and vmeans for ad' iustably securing the removable section in operative position.

2. A railway car truck having side frames, a bolster having its ends mounted in the side frames, and an adjustable removable section in the side frames for retaining the bolster in position.

A side frame for railway car trucks llaving a removable section in its upper member7 one end of. the removable section and the ad- `iacent end of the side frame member being correspondingly beveled, and means engaging the opposite end oi the removable section and tbe adjacent end oi the upper memand member mtoengagement. 4. A side frame for railway car trucks hav- -ing a removable section in its upper member, one end o'r the removable section and the ad-v jacent end of the side frame member being correspondingly beveled, and adjustable means engaging the opposite end of the removable section and the adjacent end of the upper member for forcing the beveled ends of the section and member into engagement, 5. l side frame for railway car truckshaving a removable section in its upper member, one end of the removable section and the adjacent end of the side frame member being correspondingly beveled, and a Wedge engaging the opposite end of the removable section and the adjacent end of the upper member for forcing tbe beveled ends of the section and member into engagement.

HARRY S. HART. l/'r'i'tncsses W. T. JONES, leerme MAcEDWARD. 

